What's the temperature in South China in 2022?

Water is the source of life, so rainfall is very important. If there is no rainfall, fields and lakes will dry up, so crops will not grow normally and the survival of people and animals will be threatened. Rain solar term is the second traditional solar term after beginning of spring solar term. Because the temperature rises at this time, the ice and snow melt, and the warm and humid airflow moves, the precipitation in solar terms will increase after the rain, which also provides good water and soil conditions for the next spring ploughing.

After the rain solar term in 2022, the temperature in most parts of China will gradually rise above 0℃. There will be less snowfall and more precipitation at this time. The average temperature in the south of the Yangtze River is about 5℃, and that in south China is above 10℃, but the average temperature in north China is still low. In most areas, the average temperature in this period may exceed 10℃, peach blossoms and plums germinate, and cherry blossoms begin to bloom. It's spring in the climate sense.

It doesn't rain in rainy days. It doesn't necessarily rain on the rainy day, but it is more likely to rain. The specific meaning of the rain solar term is the beginning of precipitation, which means that after this solar term, the rainfall will gradually increase. It used to be said that if it doesn't rain on a rainy day, this year's harvest will be affected. "If it doesn't rain, the seedlings will be gone." It means that if it doesn't rain, the seedlings will be affected and the harvest will not be settled. However, in the modern sense, there is no need to worry too much. Just because it didn't rain that day doesn't mean it won't rain in the future. When warm and humid air from the ocean begins to move, it will rain when it meets cold air that has not completely left.

The benefits of rain on crops Proper precipitation is especially important for the growth of crops. It can increase the moisture content in the soil, and water is the transport medium of enzymes, ions, organic substances and other "substances" in crops. After effective precipitation, the amount of water that roots can absorb from the soil increases, thus improving the intensity of transpiration, photosynthesis and "material" transportation.

In addition, rainwater dissolves some nutrients that can be absorbed by crops, mainly nitrogen and sulfur compounds, which can be volatilized into the air with water. For example, compounds of nitrate nitrogen, ammonium nitrogen and sulfurous acid can be absorbed and utilized by crops. Among them, nitrogen dissolved in rainwater has more obvious influence on the growth of crops. Because it exists in the form of nitrate nitrogen, ammonium nitrogen and other available nitrogen, it has certain ability to promote crop growth after being absorbed by crop roots.